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GENERATORS

- 16 -

IS 21.5-23.5

GB

4.2.2 Typical installation with generator 

below

 the

water line (Fig.5)

1

Sea exhaust

2

Silencer

3

Muffler

4

Water filter

5

Main system tap

6

Sea intake

7

Drain tap

8

Antisiphon valve

9

Drainage

A

- Pipes - inner diameter  Ø75 mm.

B

- Pipes - inner diameter  Ø25 mm.

C

- Pipes - inner diameter  Ø16 mm.

D

- Pipes - inner diameter  Ø14 mm.

-   It is very important to respect the distances shown

in the installation diagrams.

-  The mufflers (Ref.3 of Fig.4 and 5 ) have the function

of collecting the water left in the exhaust pipes when
the generator engine is turned off and preventing
that it flows into the engine through the manifold
and the exhaust valve.  For this reason it is essential
to respect the position of the muffler and the length
of the pipes as indicated in the installation diagram.

4.3

Components

The sea water intake system must

be separate from the one for the engines propelling
the boat.

1

- Direct sea intake 1/2"

If the unit is installed more than 1

metre above the water-line, a check valve should be
fitted after the sea intake (fig.6, ref.1) to prevent the
water circuit emptying when the motor is off. If this
empties, the rotor of the water pump might be damaged
during start up; for the same reason, when the unit is
first started up, the suction tube from the valve to the
pump should be filled manually.

2

- Ball tap (general) 1/2"

3

- Ball tap (drainage) 1/2"

This is used to drain the cooling system of the
electric generator for general maintenance or when a
long period of inactivity is expected.

4 - 

Water filter (can be inspected)

This must provide efficient protection for the cooling
circuit from the entrance of mud, sand and seaweed.
Rate of flow IS 21.5-23.5: 40-45 L/min.

The filter mesh should be very fine.

Mesh 2 - 470 micron is recommended, other sizes do
not give good filter performance.

5

- Anti-siphon valve: this is a valve that brings the

cooling circuit back to atmospheric pressure when
the motor is turned off, thus avoiding the formation of
siphons. 

It’s use obligatory when the base of the

generator group is under the water line

, and it

must be positioned at least 50 cm. above sea level.

  (see fig.5).

Anti-siphon valve must be inserted

between the inlet of the sea water pump and mixing
elbow as indicated  in Fig.9.
The drainage duct of the anti-siphon valve must run
beneath the valve itself in order to prevent water
accumulating in the duct, which should always re-
main empty to allow air to pass through when the unit
is switched off. (see fig.7)

It is recommended that the drainage pipe from the anti-
siphon valve be fed into the bilge, as small amounts of
water might be drained through it during normal operation.
The cooling circuit is connected to the heat exchanger
pipe fitting as shown in Figure 8.

4.4

Drainage system

The flue gas/water drainage system of the generator
must be separate from that of the main motors

 The length of the tube from the

highest point of the drain duct to the muffler should
not exceed 2 metres. This is to prevent the water left
in the drainage duct returning to the motor after
filling the tank muffler, when the unit is turned off.

1

- Muffler.

This dampens the noise of the drainage and stops the
water flowing back towards the motor. The muffler
should be installed no less than 1 metre away from
the generator and positioned at a height as per
fig.4,5.

2

- Silencer

This further reduces noise. It should be installed no
more than 1 metre from the sea drainage nozzle.

3

- Outboard drainage pipe.

This must be fitted in a position that is constantly
above sea level in all the vessel’s possible conditions
of use.

Содержание I.S. 21.5

Страница 1: ...60 Hz GB INSTALLATIONMANUAL mase mase mase mase maseGENERA TORS I S 21 5 I S 23 5 60 Hz 60 Hz 50 Hz...

Страница 2: ...GENERATORS 2 IS 21 5 23 5 Nomefile 41915 p65 del 20 11 00 Data di aggiornamento Redatto D B Fig 1 Fig 4 1 3 4 0 6 7 0 8 0 0 1 2 Fig 2 Fig 3...

Страница 3: ...GENERATORS 3 IS 21 5 23 5 Fig 5 Fig 6 Fig 7 Valvola antisifone Anti siphon valve Soupape antisiphon Beluchter Fig 8 Fig 9...

Страница 4: ...GENERATORS 4 IS 21 5 23 5 Fig 10 3 2 1 4 Fig 11 1 1 Fig 12 Fig 13...

Страница 5: ...GENERATORS 5 IS 21 5 23 5 GEN CARICO LOAD CHARGE VERBRUIKERS RETE MAINS RESEAU WALAANSL Fig 15 Fig 14 1...

Страница 6: ...GENERATORS 6 IS 21 5 23 5 Fig 16 WIRINGDIAGRAM No FILE 22 53 030 00...

Страница 7: ...15 3 2 Fastening the unit to the ground 15 3 3 Ventilation 15 4 COOLINGWATERCIRCUIT 15 4 1 Sea water feed system 15 4 2 1 Typicalinstallationwithgeneratorabove thewaterline 15 4 2 2 Typical installati...

Страница 8: ...and the reference documents only thus can regularfunctioningandreliabilityofthegeneratorbeguaranteedovertime andprotectionagainstdamagetopersons or things The drawings are provided by way of example E...

Страница 9: ...r air exchanger The air needed for combustion is taken in through the opening on the base fig 2 so care must be taken to ensure that this opening is always free 4 COOLING WATER CIRCUIT The engine is c...

Страница 10: ...ltermeshshouldbeveryfine Mesh2 470micronisrecommended othersizesdo not give good filter performance 5 Anti siphon valve this is a valve that brings the cooling circuit back to atmospheric pressure whe...

Страница 11: ...tothegeneratorand thebattery Do not connect other loads to the battery In order to reduce galvanic currents to a minimum the of the battery of the electric generator should not be connected to the of...

Страница 12: ...e gauge instrument 28 Remote control panel kit with instruments 29 Remote control panel kit Table of characteristics for single voltage Hz V kW A 115 156 5 230 78 2 120 175 240 87 5 IS 21 5 IS 23 5 21...

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